Looking for a conversion chart (of EV, Lux, shutter speed, ISO, aperture)

Ashfaque · May 30, 2015

Hello,

I am aware of Sekonic's EV/Lux/FootCandle Conversion Chart. But is there any (standardised) conversion chart of EV, Lux, shutter speed, ISO, aperture? How do I go about making such a conversion chart?

Bests,

Ashfaque

Ian Grant · May 30, 2015

Make yourself a spread sheet.

Here's the Gossen conversion on the back of my Profisix SBC

This ones for 50 ISO EV6 is 1 second @ f8

Ian

Steve Smith · May 30, 2015

Bear in mind that EV is not a measurement of light, it's a combination of shutter speed and aperture. It only represents a light measurement when the ISO value is included.

Steve.

Ashfaque · May 30, 2015

Ian and Steve: Thank you both very much. I will get back to you later.

wiltw · May 30, 2015

Steve Smith said:
Bear in mind that EV is not a measurement of light, it's a combination of shutter speed and aperture. It only represents a light measurement when the ISO value is included.

Steve.

Yet if you look at the various equivalents at EV0:

Sekonic at ISO 100: 250 lux, 0.23 foot-candles
Gossen at ISO 50: 5.5 lux, 0.5 foot-candles
Minolta at ISO 100: (lux not specified), 0.31 foot-candles

...I see no agreement in the above three equivalents!

Sirius Glass · May 30, 2015

Steve Smith said:
Bear in mind that EV is not a measurement of light, it's a combination of shutter speed and aperture. It only represents a light measurement when the ISO value is included.

Steve.

From: http://en.wikipedia.org/wiki/Exposure_value

chriscrawfordphoto · May 30, 2015

wiltw said:
Yet if you look at the various equivalents at EV0:

Sekonic at ISO 100: 250 lux, 0.23 foot-candles

Gossen at ISO 50: 5.5 lux, 0.5 foot-candles

Minolta at ISO 100: (lux not specified), 0.31 foot-candles

...I see no agreement in the above three equivalents!

This represents differences in the calibration standards each manufacturer uses.

Sirius Glass · May 30, 2015

chriscrawfordphoto said:
This represents differences in the calibration standards each manufacturer uses.

No they represent the sensitivity reading of each device for a particular ISO speed.

macfred · May 30, 2015

Exposure Value Chart
http://www.fredparker.com/ultexp1.htm#Light Intensity Chart

Exposure Factor Relationship Chart
http://www.fredparker.com/ultexp1.htm#EXPOSURE FACTOR RELATIONSHIP CHART B

Ashfaque · May 31, 2015

Thanks Fred.

AgX · May 31, 2015

macfred said:
Exposure Value Chart
http://www.fredparker.com/ultexp1.htm#Light Intensity Chart

Memorize (as not directly shown at chart):

EV 0 @ ISO 100, F 1, 1sec

AgX · May 31, 2015

chriscrawfordphoto said:
This represents differences in the calibration standards each manufacturer uses.

The differences at lux seem to big for that.

Looking for a conversion chart (of EV, Lux, shutter speed, ISO, aperture)

Ashfaque

Ian Grant

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Steve Smith

Ashfaque

wiltw

Sirius Glass

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chriscrawfordphoto

Sirius Glass

macfred

Ashfaque

AgX

AgX

Looking for a conversion chart (of EV, Lux, shutter speed, ISO, aperture)

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